* { box-sizing: border-box; }
body { margin: 0; background: #f5f7fb; color: #252b3a; font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif; }
a { color: inherit; text-decoration: none; }
.topbar { height: 68px; padding: 0 max(24px, calc((100% - 1200px) / 2)); display: flex; align-items: center; justify-content: space-between; background: white; border-bottom: 1px solid #ebedf2; }
.brand { display: flex; align-items: center; gap: 10px; font-size: 19px; font-weight: 700; white-space: nowrap; }
.brand-mark, .avatar { display: grid; place-items: center; color: white; background: #3979f6; font-weight: 700; }
.brand-mark { width: 36px; height: 36px; border-radius: 11px; }
.brand small { font-size: 13px; color: #8992a3; font-weight: 400; margin-left: 6px; }
.top-link { color: #687386; font-size: 14px; }
.top-link:hover { color: #3979f6; }
.container { max-width: 1200px; margin: 0 auto; padding: 36px 24px 64px; }
.share-heading { display: flex; align-items: center; gap: 16px; margin-bottom: 28px; }
.avatar { width: 56px; height: 56px; border-radius: 50%; font-size: 24px; }
h1, h2, p { margin: 0; }
h1 { font-size: 22px; }
.share-heading p, .panel-heading p { color: #929bad; font-size: 13px; margin-top: 7px; }
.file-panel { background: #fff; border: 1px solid #edf0f5; border-radius: 14px; padding: 26px; box-shadow: 0 8px 32px rgba(35, 57, 97, .04); }
.panel-heading { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 22px; }
h2 { font-size: 17px; }
.view-label { color: #8190a5; font-size: 13px; white-space: nowrap; }
.gallery { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 22px; }
.image-card { display: block; min-width: 0; border-radius: 9px; padding: 5px; transition: background .2s, transform .2s; }
.image-card:hover { background: #f1f6ff; transform: translateY(-2px); }
.image-card:focus-visible { outline: 3px solid #3979f6; outline-offset: 2px; }
.image-card img { width: 100%; aspect-ratio: 4 / 5; object-fit: contain; border-radius: 7px; display: block; background: #edf1f6; }
.image-card span { display: block; padding: 10px 2px 4px; font-size: 13px; color: #596477; }
@media (max-width: 720px) { .topbar { height: 60px; padding: 0 16px; } .container { padding: 25px 14px 40px; } .file-panel { padding: 18px 14px; } .gallery { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; } .brand small { display: none; } }